How to create a prioritized Goroutine in Go?

There are two steps to create a priority Goroutine in Go language: register a custom Goroutine creation function (step 1) and specify a priority value (step 2). In this way, you can create Goroutines with different priorities, optimize resource allocation and improve execution efficiency.

How to create a priority Goroutine

In concurrent programming, creating a priority Goroutine is to optimize system resource allocation and improve program execution The key to efficiency. The Go language provides built-in mechanisms to create and manage Goroutines with different priorities.

Priority level

Priority in Go ranges from 0 to 255. The higher the value, the higher the priority. By default, all Goroutines have equal priority 0.

Create a priority Goroutine

To create a priority Goroutine, you can use the runtime.SetGoprocreafFunc function to register a custom Goroutine creation function. This function will receive a priority level parameter and return a new Goroutine.

import (
    "runtime"
)

// 自定义 Goroutine 创建函数
func priorityGoroProcFunc(priority int) (goro Proc) {
    goro Proc = runtime.MakeGS(priority)
    return
}

// 注册自定义 Goroutine 创建函数
func SetPriorityGoprofFunc() {
    runtime.SetGoprocreafFunc(priorityGoroProcFunc)
}

Practical case

To create a Goroutine with a specific priority, you can specify the priority value when creating the Goroutine:

// 创建高优先级 Goroutine
go func() {
    // 高优先级代码
}()

// 创建低优先级 Goroutine
go func() {
    // 低优先级代码
}()

Through this In this way, you can create Goroutines for tasks that require different execution speeds or have priority relationships. For example, in a real-time system, you might want to create a high-priority goroutine for handling critical events, while the goroutine for handling background tasks can have a lower priority.

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